QSettings problem

[eleanor]

Hi, I have a problem writting and reading QSettings...

void clientGui::read_settings() {
    QSettings settings(COMPANY, PRODUCT);
    tab_counter = settings.value("counter").toInt();
    for(quint32 i=0;i<tab_counter;i++) {
        tab_names.append(settings.value("tab"+tab_counter).toString());
    }
}
 
void clientGui::write_settings() {
    /* TODO: spremeni ti dve imeni v dejanski imeni: ime_firme : ime_programa */
    QSettings settings(COMPANY, PRODUCT);
 
    /* counter - number of additional tabs */
    settings.setValue("counter", tab_counter);
 
    /* save the schema names */
    settings.setValue("tab"+tab_counter, tab_name);
}
 
void clientGui::change_settings(QString name, bool read_write) {
    QSettings settings(COMPANY, PRODUCT);
 
    /* i++ the counter - add one new tab */
    if(read_write) {
        tab_counter += 1;
        /* save the tab name */
        settings.setValue("tab"+tab_counter, name);
    }
    else if(tab_counter > 0) {
        tab_counter -= 1;
 
        /* remove the name */
        settings.remove(name);
    }
    /* save the counter */
    settings.setValue("counter", tab_counter);
 
}

void clientGui::read_settings() {
    QSettings settings(COMPANY, PRODUCT);
    tab_counter = settings.value("counter").toInt();
    for(quint32 i=0;i<tab_counter;i++) {
        tab_names.append(settings.value("tab"+tab_counter).toString());
    }
}

void clientGui::write_settings() {
    /* TODO: spremeni ti dve imeni v dejanski imeni: ime_firme : ime_programa */
    QSettings settings(COMPANY, PRODUCT);

    /* counter - number of additional tabs */
    settings.setValue("counter", tab_counter);

    /* save the schema names */
    settings.setValue("tab"+tab_counter, tab_name);
}

void clientGui::change_settings(QString name, bool read_write) {
    QSettings settings(COMPANY, PRODUCT);

    /* i++ the counter - add one new tab */
    if(read_write) {
        tab_counter += 1;
        /* save the tab name */
        settings.setValue("tab"+tab_counter, name);
    }
    else if(tab_counter > 0) {
        tab_counter -= 1;

        /* remove the name */
        settings.remove(name);
    }
    /* save the counter */
    settings.setValue("counter", tab_counter);

}

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The problem is that my settings look like this:

[General]
ab=fadf
counter=0
b=erf
tab=

where it should look like this:
counter=0
tab0=X
tab1=X
tab2=X ... etc (where X is some name)

change_settings should add new tab[number] variable with a name...

What is the problem...any ideas?

[Lykurg]

settings.setValue("tab"+tab_counter, tab_name);

settings.setValue("tab"+tab_counter, tab_name);

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Instead of doing it that way, you might have a look at QSettings::beginWriteArray().

[mcosta]

Probably the Error is that QString:perator+ doesn't accept numeric values.
You can use

settings.setValue("tab" + QString::number(tab_counter), tab_name);

settings.setValue("tab" + QString::number(tab_counter), tab_name);

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or

settings.setValue(QString("tab").arg(tab_counter), tab_name);

settings.setValue(QString("tab").arg(tab_counter), tab_name);

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[faldzip]

what's more, this code:

for(quint32 i=0;i<tab_counter;i++) {
        tab_names.append(settings.value(QString("tab%1").arg(tab_counter)).toString());
    }

for(quint32 i=0;i<tab_counter;i++) {
        tab_names.append(settings.value(QString("tab%1").arg(tab_counter)).toString());
    }

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for 10 tabs will append the "tab10" 10 times, because in every loop pass tab_counter is constant and equal 10, so I think you want to put i in arg() and not tab_counter.

[Lykurg]

settings.setValue(QString("tab%1").arg(tab_counter), tab_name);

settings.setValue(QString("tab%1").arg(tab_counter), tab_name);

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[mcosta]

Sorry!!

But this

settings.setValue(QString("tab%1").arg(i), tab_name);

settings.setValue(QString("tab%1").arg(i), tab_name);

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can be better